function del(departmentId) {
    $.ajax({
        type:"DELETE",
        url:"/department_infor/" + departmentId,
        dataType:"text",
        success:function (data) {
            //alert("data = " + data);
            if (data == "true"){//删除成功，移除删除行
                alert("删除成功！")
                window.location.reload();
            }else {
                alert("删除失败！");
            }
        },
    error:function f() {
        alert("对不起，删除失败！");
    }
    });
}